don't see too many of these for sale

kiwicar · Post by **kiwicar** » Mon Feb 20, 2012 11:12 am

Hi
Not sure if this is of interest to any one, but items 450 to 454 on this list http://www.mod-sales.com/tender/listing.htm are rolls royce engine blocks, new unused! true tuning parts are not common, but ally wetlinered blocks are a good starting point and will probably go for peanuts. . . I'm thinking of bidding £20 on each of them unless someone posts up that they will be bidding on any of them.
Best regards
Mike

DaveEFI · Post by **DaveEFI** » Mon Feb 20, 2012 1:21 pm

Interesting prospect. How much would you expect to pay for a complete engine to get all the other bits?

My initial thoughts are there must be other much more powerful all ally units around that are more common - Lexus, etc?

topcatcustom · Post by **topcatcustom** » Mon Feb 20, 2012 2:27 pm

Whats the general consensus and potential on those then Mike? And why have the MOD got so many 4.2 Jag V8's to sell off?!!!!!

DaveEFI · Post by **DaveEFI** » Mon Feb 20, 2012 2:59 pm

topcatproduction wrote:Whats the general consensus and potential on those then Mike? And why have the MOD got so many 4.2 Jag V8's to sell off?!!!!!

The XK engine was used in a lightweight tank type thingie.

unstable load · Post by **unstable load** » Mon Feb 20, 2012 3:57 pm

I see that there are Rolls heads, oil pumps and manifolds listed there, too.

unstable load · Post by **unstable load** » Mon Feb 20, 2012 4:01 pm

Lot 256 could be fun to have if you had the land to drive it on.

kiwicar · Post by **kiwicar** » Mon Feb 20, 2012 4:15 pm

Hi
As Dave says MOD used the XK lump in lots of light tanks and armoured cars, along with the Rols royce 6.
The Rolls engine is like any other engine push rod , limited by its heads, however it is my belief and that the port flow on the Rolls heads is pretty good, especially if you look at the power that is available out of the Mulsane turbo I think it delivered about 550bhp on very mild boost and and on a cam that would make the standard rover cam look radical.
Personally I look for an engine that has frozen and destroyed the block, generally no one would want it . . unless they had access to a new block, probably pick it up for very little money

as far is pistons go, chevy 400 standard size, those liners would easily take a +25 overbore and chevy pistons are cheap, rods, either re bushed rolls or again chevy something could be found that would fit the main journels.
There were roumers that the Rolls engine was infact based on the Crysler/mopar engine, when I say based, it was said it was an adapted kit engine and I would certainly think it would be worth further investigation to see where the similarities lie.
If you can get an ally wet liner block that takes US v8 rotating assembly, even if it is a hybrid, and all you need to source from a doner engine are heads and cam blank then it is an interesting prospect, especially as ally blocks are atleast £2.5k from aftermarket manufacturers.
I think these will go for little more than scrap value.
Best regards
Mike

kiwicar · Post by **kiwicar** » Mon Feb 20, 2012 4:24 pm

409 and 410 would also be interesting, 350 bhp RR deisels. I pointed out a couple of these to Kevin the mole when a few came up last time, as a new engine for his fire engine. . . he thought the drum brakes might not be up to the torque/power. . no fun some people

.
Best regards
Mike

DaveEFI · Post by **DaveEFI** » Mon Feb 20, 2012 4:36 pm

Fascinating stuff - I'd heard the rumour the Royce V-8 was US based - but thought the RV8 was the first all ally unit from there?

There appear to be R-R heads listed too - are they for the same engine?

What did the MOD use the R-R V8 for? Does it have a gearbox mounting that is a standard? Only interested - I'm not thinking of bidding.

kiwicar · Post by **kiwicar** » Mon Feb 20, 2012 5:12 pm

Hi
The RR V8 from is basically the same unit from about 52 onward, they only made 2 V8 engines, the other one they made 3 of in 1905!

so yes the heads will be for the same engine well unless they are for a perkins/rolls royce deisel.
OOOh I've just clicked on the picture!

should have done that earlier! it is not the V8 engine it is the straight 8 heaps more fun I think they fitted those to ferrets and stuff like that now that also explains the long flat looking heads! now if I could fnd a crank for one of those. . .
Sorry chaps, but don't bid unless you want a straight 8.
I'll be off to crawl back under my rock.

Best regards
Mike

topcatcustom · Post by **topcatcustom** » Tue Feb 21, 2012 2:25 pm

Straight 8 PERFECT for my old series 2 landy idea with that massive blower I bought Mike!!! I'll be watching- however, a bare block and head(s) won't be much use to me...

kiwicar · Post by **kiwicar** » Tue Feb 21, 2012 2:59 pm

Hi Tom
I know what you mean, without the crank you are a bit stuck. . . also from reading around it may be an "inlet over exhaust" engine, even though in the photos it looks like a side valve. I am still thinking of putting in a tender of £20 for a block and £15 on a head, maybe on two of each. I suspect they are only a 5 or 7 bearing engine in which case you could have a motorcycle style crank made out of discs cut from a bar and seperate crank pins and press fit the whole lot together. A sidevalve 8 of 5.7 litres is never going to make that much power even if you stick a really huge blower on it so I don't think a forged 4130 crank will be necessary.
The only other thing I am wondering about is that it may be a side valve Alvis engine, but designed and cast by Rolls Royce, in which case it may be something that was only ever a huge truck or tank engine and a totally different beast to the Rolls Royce car lump. Yup I think I am going to have to bid on one just to fingd out.
Best regards
Mike

kiwicar · Post by **kiwicar** » Tue Feb 21, 2012 3:11 pm

Hi again
Well a little more research, the rolls royce car engine was a Rolls-Royce B80 Mk.6A, so was the engine in the alvise Sarecen and saladin armoured cars and that engine was inlet over exhaust however the one in the stolwert was a Rolls Royce B81 MK 8B same head configuration but 6.5 litres . . . so in theory that lump in the crate stands a good chance of being a Rolls-Royce B80 Mk.6A. or Rolls Royce B81 MK 8B. Inlet over exhaust is a really "interesting" bit of engine design

Best regards
Mike

topcatcustom · Post by **topcatcustom** » Tue Feb 21, 2012 3:47 pm

I think more trouble than it's worth! Would be interesting to see though!

DaveEFI · Post by **DaveEFI** » Tue Feb 21, 2012 4:00 pm

kiwicar wrote:Hi again
Well a little more research, the rolls royce car engine was a Rolls-Royce B80 Mk.6A, so was the engine in the alvise Sarecen and saladin armoured cars and that engine was inlet over exhaust however the one in the stolwert was a Rolls Royce B81 MK 8B same head configuration but 6.5 litres . . . so in theory that lump in the crate stands a good chance of being a Rolls-Royce B80 Mk.6A. or Rolls Royce B81 MK 8B. Inlet over exhaust is a really "interesting" bit of engine design
Best regards
Mike

Twas a favourite of Rolls. The 6 cylinder car engines used right up to the introduction of the V-8 in the early '60s were this. But cast iron block. They produced something like 175 bhp from nearly 5 litres.